We've been making use of What To Expect's free iPhone app to geek-out about Baby's arrival. It has really good daily snippets about your pregnancy, and there's even about one tip per week specifically for dads. It gives you a countdown until Baby's due date and offers an idea of Baby's weight and size. We looked forward to seeing which fruit or vegetable Baby was going to grow into each week (and then are instantly reminded of how big Baby is each and every time we went to the grocery store). It's also a big fat liar.